Notices of hearings required by section 162R, one hundred and seventy-two, one hundred and seventy-three or one hundred and seventy-four or of the revocation or suspension of any license issued under any of said sections shall be deemed sufficient when sent postpaid by registered mail to the last business or residence address of the licensee appearing on the records of the commissioner. The affidavit of the commissioner or of any person authorized by him to send such notice that such notice has been sent in accordance with this section shall be prima facie evidence that such notice was duly given.
Massachusetts Legal Code